styles.css

@import url("https://fonts.googleapis.com/css2?family=Ubuntu:wght@400;700&display=swap");

* {
  box-sizing: border-box;
}

body {
  font-family: "Ubuntu", sans-serif;
  background-color: #001427;
  color: #fff;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  height: 100vh;
  overflow: hidden;
}

.changeText {
  margin-top: 2rem;
  background-color: rgba(0, 0, 0, 0.8);
  padding: 0.6rem 1rem;
  border-radius: 1000px;
  border: none;
  color: rgb(228, 228, 228);
  font-size: 0.9rem;
  font-weight: bold;
  font-family: inherit;
  width: 20rem;
  box-shadow: 0 2px 6px rgba(255, 255, 255, 0.1);
}

.main {
  background-color: rgba(0, 0, 0, 0.8);
  border-radius: 600px;
  padding: 0.3rem 0.5rem 0.3rem 1rem;
  font-size: 1rem;
  text-align: center;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 6px rgba(255, 255, 255, 0.08);
}

.text {
  margin: 1rem 2rem;
  line-height: 1.4;
}

.speed {
  width: 2.4rem;
  font-size: 1rem;
  font-family: inherit;
  font-weight: bold;
  background-color: transparent;
  color: #fff;
  border: none;
}
input:focus {
  outline: none;
}

/* input[type="number"] {
  -webkit-appearance: textfield;
  -moz-appearance: textfield;
  appearance: textfield;
}
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: visible;
} */

@media (orientation: portrait) {
  .changeText {
    width: 90%;
  }
  .text {
    font-size: 1.5rem;
    line-height: 1.6;
  }
  .main {
    margin-bottom: 3.5rem;
  }
}
@-moz-document url-prefix() {
  @media (orientation: portrait) {
    .main {
      margin-bottom: 4.5rem;
    }
  }
}